Wave Optics

In diffraction experiment, from a single slit, the angular width of the central maxima does not depend upon

In Young's double slit experiment green light is incident on the two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?

A light wave of wavelength \(\lambda\) is incident on a slit of width \(d\). The resulting diffraction pattern is observed on a screen at a distance \(D\). If linear width of the principal maxima is equal to the width of the slit, then the ...

When wavelength of light used in optical instruments A and B are 4500\(\mathop A\limits^o\) and 6000\(\mathop A\limits^o\) respectively, the ratio of resolving power of A to B will be

The phenomenon of interference is based on

In Young's double slit experiment fifth dark fringe is formed opposite to one of the slit. IID is the distance between the slits and the screen and $d$ is the separation between the slits, then the wavelength of light used is

If a star emitting yellow light is accelerated towards earth, then to an observer on earth it will appear

In biprism experiment, the distance between source and eyepiece is 1.2 m, the distance between two virtual sources is 0.84 mm. Then the wavelength of light used if eyepiece is to be moved transversely through a distance of 2.799 cm to shift...

Light of wavelength ' $\lambda$ ' is incident on a single slit of width ' $a$ ' and the distance between slit and screen is ' $D$ '. In diffraction pattern, if slit width is equal to the width of the central maximum then ' $D$ ' is equal to

The luminous border that surrounds the profile of a mountain just before sun rises behind it, is an example of